Product Details

The JLS-3/6/12/36 combined instrument trans formers hav e four versions with different voltages 3/6/12/36 kV. The transformers are designed for three phase electric systems of rated frequency of 50/60Hz. The products are used in metering electric energy, voltage controlling and relay protection applications

2. Specification

(1). Rated voltage: 6kV/12kV/36kV

(2). Accuracy class: 0.5/0.2 and 0.5S/0.2S

(3). Rated voltage ratio: 6k/100; 1k/100; 3300/100

(4). Rated current ratio: 5 ~ 300/5

(5). Note: The products may be custom manufactured to a higher ratio.

3. Type

Type

Rated voltage ratio(V)

Rated current ratio(V)

Frequency

(HZ)

Voltage transformer accuracy class and rated output(VA)

Current

transformer accuracy class and rated output(VA)

Rated insulation

Level(KV)

Standard code

0.2

0.5

0.2

0.5

JLS-3

JLS-6

JLS-12

3000/100

5-300/5

50

20

25

10

10

3.6/24/75

GB 1208-97

GB 1207-97

GB 17201-97

6000/100

5-300/5

50

20

25

10

10

7.2/32/75

6300/110

5-300/5

50

20

25

10

10

7.2/32/75

10000/100

5-300/5

50

25

25

10

10

12/42/75

JLS-36

36000/100

5-300/5

50

50

50

10

10

10.5/95/185

4. Structure feature

(1). The product is cast in epoxy resin.

(2). The transformers are equipped with primary winding and secondary winding.

The windings are fixed to their on core bar by casting.

(3). For the two secondary windings, the first one is for either measuring or

protection purposes;

the other is for being connected into an open-delta connection in a three-phase system.

(4). The outlet of the primary winding is insulated from the earth to a correspondent level.

(5). The secondary terminal board is covered with a transparent cover made of plastic.

(6). The bolted earthed clamp is located on the transformer base plate.